Improvement in car-couplings



1. a. A. & 1; n. YOUNG." Bar -Coupling.

N0. 166,327, I Patented Aug.3,l875.

WITNESSES:

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N. PETERS, 'FHVTU-LITHOGRAVHER. WASHJNGTOMV G. v i

NITED STATES FFIoa ATENT v JOHN Q. A. YOUNG AND JAMES D. YOUNG, OF CEDARMILL, OREGON.

IMPROVEMENT IN CAR-COUPLINGS.

Specification forming part of Letters Patent N 0. 166,327, dated August3, 1875; application filed April 9, 1875.

To all whom it may concern:

Be it known that we, JOHN Q. A. YOUNG and JAMES D. YOUNG, of Cedar Mill,in the county of Washington and State of Oregon, have invented a new andImproved Oar- Ooupling, of which the following is a specification In theaccompanying drawing, Figure l represents a vertical longitudinalsection of our improved car-coupling; Fig. 2, a side view, and Fig. 3 atop view, of the lower pivoted jaw with upper part of draw-head cut 06'.

Similar letters of reference indicate corresponding parts.

Our invention relates to improvements on the car-coupling of H. E.Smith, patented August 25, 1874, and numbered 154,423, by which theoperation and construction of the same are greatly simplified.

The invention consists of a bottom-recessed drawhead, with jaw-shapedfront end, and of an interior horizontally-pivoted lower jaw, that lookthe enlarged head of the couplingpin. A can] on the lateral shaft of theuncoupling-lever binds on a rear swell of the lower jaw, for securelylocking the couplinglink, the shaft and cam being introduced to thecavity of the drawhead by a correspond ing side slot.

1n the drawing, A represents a draw-head, constructed with a recess orcavity at its front part-that is, open at the bottom partand providedwith side walls for applying the swinging lower jaw B therein. The frontend of draw-head A and jaw B are recessed for the enlarged conical headof the coupling-link O, the jaw end of the draw-head being especiallydesigned to dispense with the upper swinging jaw of Smiths coupling, andmake the draw-head take its place for locking the coupling'link. Thedirect action of the lower front-weighted jaw B and the jaw-shaped endof the drawhead makes the coupling less complicated, less heavy, andmore durable, allowing one jaw to perform the opening, and to producethereby more readily the release of the coupling-link in the act ofuncoupling. The lower jaw B is fulcrumed to a lateral horizontalcross-pin, c, and provided at the end of the rear extending part with acamshaped swell, 1), against which a lug or cam, d, of the lateral shaftD is carried for binding thereon and locking the jaw on the head of thelink. The lateral shaft D is connected by an outer lever-arm, E, withsuitable uncoupling mechanism, so that on raising the leverarm the camreleases the swell of the lower jaw and uncouples the link. A slot, (1,of one of the side walls of draw-head A, of about the size of the cam d,admits the illtroduction of shaft and cam to their position inside ofthe draw-head. An outer lug, e, of shaft D, in connection with a pivotedweighted lever-hook, F, retains the cam shaft and lever-arm in uncoupledposition, and drops the same as soon as. by the concussion of thedraw-heads, the hook connection is interrupted. The downward-turning camcarries thereby the rear part of the lower jaw down,

and locks, by the upward motion of the front end, the link securely inposition to couple the cars. The release of the cam from the rear partof the jaw causes, by the heavier front part, the instant dropping ofthe same and the uncoupling of the cars. A pin-hole of the draw-head andjaw admits also the use of the same with the common pin-and-linkcoupling.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent The draw-head A, provided with recessedjaw-shaped front end, in combination with the swinging front-weightedjaw B, cam d of the lateral shaft D, and the conically-headedcoupling-link O, for coupling and uncoupling the link by the action ofthe cam, substantially as and for the purpose set forth.

JOHN Q. A. YOUNG. J. D. YOUNG. Witnesses:

S. A. HOWELL, HIRAM DUSTIN.

